Tobacco stemming device



2 Sheets-Shut 1 F. H. AHL

TOBACCO STEMMING DEVICE Filed Nov. 6 1923 Zo/V:W

Aug. 25, 1925.

v 1,5515357 F. H. AHL. A

ToBAcco smuams DEVICE Filed Nov. e, 1923 2 Sheets-Sheet 2 gnou/do@ FHA/1L /v l Glitoz nu l vTo all whom t may concern:

Patented Aug. 25, 1925.

YUNITED` STATES vPATENTv OFFICE.

FRANK H. AHL, rOIFl NEW YORK, N. y

TOBACOO-STEMMING DEVICE.

v Application filed November 6, 1923. Serial-No. 673,170.

My invention `relates to tobacco. leaves 'stripping or stemming machines, that is, a

machine adapted to strip the laminas of ay lea-f oftobacco from the stemand, has for its object to provide a' machine with means adapted to carry and feed tobacco leaves to a mechanism vadapted to vremove each'leaf from the feederY or carrier and toseparate the stem. from the laminae. 'A further object 'of my invention-is a stripping or stemming lmachine provided withmeans Aadapted prevent unstrippedleaves from l,f gfetting 1n among` the stripped leaves.I `A further object/isA 'a machine providedrwith means adapted tol unfold or to spreadV out and straighten the strippedlaminae as they arebeing stripped "from their'stems.y A still A further Objectis a machineadapted to strip tobacco leaves and to v carry' the stripped laminas away from the stems.

` I lVith the objects above indicated and` other objects hereinafter'described in view, my invention consists inthe construction and vcombination of elements hereinafter described and claimed. Y f.

` Referring tothe drawings:

Figure 1 isa front elevation view of the machine.

Figure l2 is a top` plan view of the same. Figure Sis a side elevation view showing the means whereby the leaves are fed and carriedto the stripping mechanism. v

Figure 4 is a sideview ofthe adjustable bearing in connection with my invention.

The machine comprisesspindles 4 supported vertically by bearings 5 which'bear against the'surfaces of the stationary plates 6. The spindles areprojected through the bores of thelplates 6 and the projected ends of the spindles are threaded to receive the cutters 7. On the spindles 4, between the )lates 6 and cutters 7 are mounted rollers 8. elts 9vare driven adjacent each other between the rollers 8 and guided in alignment with thecutters 7 and the plates 6. Ahorikzontally mounted kshaft 10 carries a cutter 11 below the planeofthe cutters The shaft 10 carries'brushes 12 on oppositesides ofthe cutter 11. l A shaft 13is mountedvhorizontally below and slightly ahead of the shaft 10 and carries a brush 14 registering with the brushesk 1 12. In frontiof and in position intermediate of shafts 1.0 and 13 is mounted horizontally a shaft l15'which carries-a cylindrical brush 16. The shaft 154 is j ournalled at its opposite ends in an-adjustable box 17, supported by: j

a bolt 18 which isy threaded to register with thethreads o'f the boreof anut 20 securely fastened in'the'pedestal 27.

.The cutters 7 are beveled to slant downwardly A.and vinwardly andl thebeveled sur@ d faces are provided withspiral teeth'.v The cutters 7 are rotated b'y the spindles 4 inl opposite directions in contact with each other'at the top, the teethI at the point of .contactforming thevfsides vof an isosceles Jthe baseofa-triangle with the teeth of the cutters 7 as the `sides and thepoint of con Y tact,y of thev cutters as' the apex whichv isadjacent to the carrier belts 9. From the above Y description itA will be readily Vunderstood that tobacco leaves, Aas 22, carried' by the belts 9 causing the butt'.`

end or head of the stem to turn downwardly and inwardly and to enter the triangular s ace bounded by the teeth of the cutters.

he cutters 7 will continue to force the stem the carrier belts, while the cutter 11 and the brusheson its opposite sides will prevent the laminae` from following the stem and will .thusbecomestripped or separatedffrom the` stem and due to the direction of motion of the cutter 11 and its brushes which is op,-`

posite that of the belts 9 will carry the stripped laminas awa-y from the stems Vand onto the brush 14 which will eventually de-v 'posit the laminae in some. receptacle .(not

lio

by means of the bolt 18 being turned in the desired d-irection to either raise or lower the bearing 17 thereby raising or lowering the shaft l5.

Having thus described my invention what I claim is l. A tobacco le-a'f stripping machine comprising parallel spindles rotating in opposite directions each carrying in the same plane a disk provided peripherally with stripping teeth, each spindle also carrying a roller adapted to drive a feed belt, a 'feed belt carried by each roller the belts being adapted to grip a leafA stem between them, and` a third= stripper disc mounted to rotate on an axis perpendicular to. the axes of the parallel spindles and having its stripping edge midway'between said spindles in posi- -t-ionto engage the leafcarried by the belts,

2. A tobacco leaf stripping machine comprising parallel-v spindles rotating in opposite directions each carrying in the saine plane a disc provided peripherally with stripping-teeth, each spindle also carrying a roller adapted tol drive a 'feed belt, a 'te-ed belt carried by each roller the belts being adaptedftogrip a leafV stein between them, a thirdstripper disk mounted to rotate on an Yaxis perpendicular to the azes of the parallel spindles and'lhaving its stripping edge midway between said spindles in position to engage the leafl carried by the belts, and

.means for soV rotating theu third stripper as to cause the portion off its strippingY edge adjacent to the belts to move in a direction "opposite to the direction `et movement of the belts. v

3. A tobaccoleaitstripping machine comprising parallelfspindles rotating in opposite directions each carrying in the same plane a disk provided pe-riphe-rally with stripping teethfeach spindle also carrying a roller.

adapted to drive a vfeed belt, a feed. belt carriedJ by ,each roller the belts being adapted to grip aV leaf stembetween them, a. third stripper disk mounted to rotate on an axis perpendicular tothe aXesof the spindles and having its stripping edge midway between thespindles in position to engage the leaf carried by the belts, means for so rotating the` third stripper as to. cause the portion of its stripping edge adjacent to the belts to move in a direction opposite to the direction of movement et the belts, and cylindrical brushesv one. on each side or' the third stripper and rotating therewith.

4. ,l tobacco leaf stripping machine com-v prising two adjacent strippers mounted in the same plane and rotating in opposite directions, a stripper mounted toy rotate. in a plane. perpendicular to that of the twoy strippers, alpair of'belts inovingover the-two strippers in the direction of rotation of said strippers, a pair of rollers guiding the belts centrally above the thi-rd; stripper, said third stripper rotating in a direction opposite, to the direct-'Lon omoyement o-t the belts.

5. A tobacco leail stripping inachinecomprising two. adjacent strippers mounted in the same plane and rotating in opposite directions, a stripper mounted to rotate in a plane perpendicular tothat of the. two strippers, a pair of belts moving over, `the two strippers in the direction o'frotation of said strippers, a pai-r oli rollers guiding theibelts centrallyaboie the1 third; stripper, said third stripper rotati-ngvinI al direction opposite to the directionl of movement `ofthe belts, andineans or preventing. displace-ment'of the belts relative to eachV other.

6. A tobacco leaf` stripping,- machine. coniprsing, two adjacent strippers mounted; Il the same plane and rotating in,k oppositedirect-rions, a stripper mounted; to ,rotelle in a plane perpendicular to ,that of the. twol. strippers, a pair of .belts moving overthe two strippers in the direction of rotation-,of said strippers, a pair'o-f-rollers guiding theibelts- FRANK H.. 

